JP2005034751A - Gas-liquid separator equipped with liquid discharge valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent drops of water that fall down on the outside surface of an exhaust pipe from being entrained to a gas outlet, with regard to a gas-liquid separator equipped with a liquid discharge valve. <P>SOLUTION: A swirl vane 12 is installed in an annular space 11 between an outward cylinder and an inward cylinder of the exhaust pipe 10. The upper part of the annular space 11 is connected to a gas inlet 4, while the upper part of the inward cylinder of the exhaust pipe 10 is connected to the gas outlet 5. A liquid discharge valve chamber 15 is located underneath a swirl chamber 14 which is located underneath the annular space 11. A float valve 16 of hollow sphere type is installed as the liquid discharge valve in the liquid discharge valve chamber 15. A draining part 21 that fans out downward is formed at the lower end of the inward cylinder of the exhaust pipe 10. The outside surface of the draining part 21 is covered with a water repellant material 22. Drops of water that fall down on the outside surface of the inward cylinder of the exhaust pipe 10 are blown outward at the surface of the draining part 21 to be separated from gas. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a condensate or condensed water mixed in a gas such as steam, compressed air or various gases, causing a swirl flow in the casing to separate the liquid by centrifugal force, and the separated liquid to be a drain valve The present invention relates to a gas-liquid separator equipped with a drainage valve that discharges by the above.

  A conventional gas-liquid separator equipped with a drainage valve has swirl vanes disposed in an annular space formed by a casing and an exhaust pipe, and the upper part of the annular space is connected to an inlet, and the lower end of the exhaust pipe passes through an inner hole. The upper part is connected to the outlet, a swirling chamber is formed below the annular space, a drain valve chamber is formed below the swirl chamber, and a drain valve is disposed in the drain valve chamber. It forms a draining portion that expands toward the surface.

The gas-liquid separator equipped with the above conventional drainage valve swirls the fluid that has entered the annular space from the inlet with the swirling blades and spouts water droplets in the gas to the outside by the action of centrifugal force. Part of the water droplets that flow down along the surface is spouted outward at the drainage section, and the water droplets spouted outward are flowed down to the drain valve chamber along the inner peripheral wall of the casing and discharged by the drain valve to separate the water droplets The discharged gas flows out from the lower end of the drainage part to the outlet through the hole inside the exhaust pipe, but a part of the water droplets flowing down along the outer surface of the exhaust pipe is not swung out to the outside at the drainage part, Since it was carried to the outlet together with the gas flow, there was a problem that the gas-liquid separation efficiency was poor.
JP 2002-276890 A

  The problem to be solved is to prevent water droplets flowing down along the outer surface of the exhaust pipe from being carried out to the outlet.

  In the present invention, swirl vanes are arranged in an annular space formed by a casing and an exhaust pipe, the upper part of the annular space is connected to the inlet, the upper part is connected to the outlet through the inner hole from the lower end of the exhaust pipe, A swirl chamber is formed below, a drain valve chamber is formed below the swirl chamber, a drain valve is disposed in the drain valve chamber, and a drainage portion is formed at the lower end portion of the exhaust pipe. A gas-liquid separator provided with a liquid valve is characterized in that the draining part has a water-repellent function.

  In the present invention, water droplets flowing down along the outer surface of the exhaust pipe are spouted to the outside more quickly on the outer surface of the draining portion having a water repellency function. An excellent effect that the separation efficiency can be increased is produced.

  In the present invention, the draining portion at the lower end of the exhaust pipe has a water-repellent function. The water repellency function of the draining portion can be imparted by coating the surface of the draining portion with a water repellent material such as fluorine resin or polishing the surface of the draining portion. For this reason, water droplets flowing down along the outer surface of the exhaust pipe are spouted to the outside more quickly on the outer surface of the drainage part, and are not carried to the outlet together with the gas.

  An embodiment showing a specific example of the above technical means will be described (see FIG. 1). The casing is formed by fastening the lower body 2 to the upper body 1 with bolts and fastening the bottom lid 3 to the lower body 2 with bolts. The upper body 1 has an inlet 4 and an outlet 5 on the left and right. The bottom lid 3 has a drainage port 6, and the drainage port 6 communicates with a drainage valve port 8 opened in the drainage valve seat 7.

  A double substantially cylindrical exhaust pipe 10 is placed on the inner end of the upper surface of the lower main body 2, and the exhaust pipe 10 is fixed between the upper main body 1. The outer cylinder of the exhaust pipe 10 is straight and formed lower than the inner cylinder. The outer cylinder can be omitted, and the main body 1 can also be used. The inner cylinder of the exhaust pipe 10 has a shape in which the upper end portion is gently expanded upward and the lower end portion is gently expanded downward, and the lower end portion forms a draining portion 21. A water repellent material 22 of Teflon (registered trademark) is coated on the outer surface of the draining portion 21. A tapered screen 9 is placed on the outer end of the upper surface of the outer cylinder of the exhaust pipe 10 and fixed between the outer periphery of the upper end of the inner cylinder of the exhaust pipe 10. A swirl vane 12 is formed integrally with the exhaust pipe 10 in an annular space 11 formed between the inner and outer cylinders of the exhaust pipe 10. The inlet 4 is connected to the lower annular space 11 through the screen 9, and the inner side of the inner cylinder of the exhaust pipe 10 is connected to the upper outlet 5.

  A swirl chamber 14 is formed between the inner surface of the lower main body 2 and the inner surface of the bottom lid 3, and a drain valve chamber 15 is formed below the swirl chamber 14. A hollow spherical valve float 16 serving as a drain valve is disposed in the drain valve chamber 15. The valve float 16 rises and falls according to the liquid level, opens and closes the drain valve port 8, and discharges only the liquid from the drain port 6 to the outside of the system. The valve float 16 is covered with a reverse cup-shaped partition member 17. The partition member 17 has a hemispherical upper part and a cylindrical shape around the upper part, and has two legs 18 projecting to the near side and the far side at the lower end, and the legs 18 are fixed to the bottom lid 3 with screws. The partition member 17 has a liquid passage opening 19 that communicates inside and outside at the lower end, and two vent holes 20 that communicate between inside and outside at the top.

  The fluid that has entered the annular space 11 from the inlet 4 is swirled by swirl vanes 12. Water droplets in the gas are swung out by the action of centrifugal force, and some of the water droplets flowing down along the outer surface of the inner cylinder of the exhaust pipe 10 are on the outer surface of the draining portion 21 coated with the water repellent material 22. Swinged out and separated. The separated water droplets flow down to the drain valve chamber 15 along the inner peripheral walls of the upper main body 1 and the lower main body 2. The valve float 16 rises and falls according to the liquid level, opens and closes the drain valve port 8, and discharges only the liquid from the drain port 6 to the outside of the system. The gas from which the water droplets have been separated flows out from the outlet 5 through the inside of the inner cylinder of the exhaust pipe 10 from the lower end of the draining portion 21.

It is sectional drawing of the gas-liquid separator provided with the drainage valve of the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper main body 2 Lower main body 3 Bottom cover 4 Inlet 5 Outlet 6 Drainage port 7 Drainage valve seat 8 Drainage valve port 9 Screen 10 Exhaust pipe 11 Annular space 12 Swirling blade 14 Swirling chamber 15 Drainage valve chamber 16 Valve float 17 Partition member 21 Drain portion 22 Water repellent material

Claims (1)

A swirl vane is arranged in an annular space formed by a casing and an exhaust pipe, the upper part of the annular space is connected to the inlet, the upper part is connected to the outlet through the inner hole from the lower end of the exhaust pipe, and the swirl chamber is located below the annular space. A drainage valve chamber is formed below the swirl chamber, a drainage valve is disposed in the drainage valve chamber, and a draining portion extending downward is formed at the lower end of the exhaust pipe. Has a water-repellent function.

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